Question

任何人都可以解释此代码

ASGEF - AFZHE
ASGEF1
UJHAHAHG - AGHBNG

在此使用C ++，我正在尝试在以下模式下打印

     A
    ABA
   ABCBA
  ABCDCBA

Answer 1

#include<iostream> 
using namespace std;
int main()
{
    char ch = 'A';
    int i, n, j, k, l;
    cout << "Enter range" << endl;
    //cin >> n;
    n = 5;
    for (i = 0; i<n; i++)
    {
        for (j = n - i; j>0; j--)
        {
            cout << " "; // here you are providing spaces..
        }
        for (k = 0; k <= i; k++)
        {
            cout << ch++; // here you are printing forward values means abcd,,,,,
        }
        ch--; // decrement ch because ch was incremented extra on last iteration.  
        for (l = 0; l<i; l++)
        {
            cout << --ch; // printing values in reverse order .. in ch = 'C' 
                        //then by doing post increment ( BA )
        }
        cout << "\n"; ch = 'A'; // then again initializing ch to A for further iterations.
    }
    return 0;
}

//对于i = 1 ch =第二个for循环后更新为'C'，但在这里我们希望'B'为第三个for循环的正确顺序...

这些评论可能会解决您的疑问.....

有人可以解释第二次for循环后的操作吗？

1 个答案: